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SPI nor drivers refactor

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Moved common SPI flash driver code (device table,
common commands) into flash/nor/spi.c and spi.h.
Updated flash/nor/stmsmi.c to reflect this refactor.

Change-Id: I141644b0af71d3835f29f06dd15b505a00e5b6ec
Signed-off-by: George Harris <george@luminairecoffee.com>
Reviewed-on: http://openocd.zylin.com/782
Tested-by: jenkins
Reviewed-by: Aurelien Jacobs <aurel@gnuage.org>
Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
This commit is contained in:
George Harris
2012-08-16 17:35:39 -07:00
committed by Freddie Chopin
parent fe52282c37
commit 15e19011ea
4 changed files with 134 additions and 64 deletions
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58
src/flash/nor/spi.h Normal file
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/***************************************************************************
* Copyright (C) 2012 by George Harris *
* george@luminairecoffee.com *
* *
* Copyright (C) 2010 by Antonio Borneo *
* borneo.antonio@gmail.com *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
/* data structure to maintain flash ids from different vendors */
struct flash_device {
char *name;
uint8_t erase_cmd;
uint8_t chip_erase_cmd;
uint32_t device_id;
uint32_t pagesize;
unsigned long sectorsize;
unsigned long size_in_bytes;
};
#define FLASH_ID(n, es, ces, id, psize, ssize, size) \
{ \
.name = n, \
.erase_cmd = es, \
.chip_erase_cmd = ces, \
.device_id = id, \
.pagesize = psize, \
.sectorsize = ssize, \
.size_in_bytes = size \
}
extern struct flash_device flash_devices[];
/* fields in SPI flash status register */
#define SPIFLASH_BSY_BIT 0x00000001 /* WIP Bit of SPI SR on SMI SR */
#define SPIFLASH_WE_BIT 0x00000002 /* WEL Bit of SPI SR on SMI SR */
/* SPI Flash Commands */
#define SPIFLASH_READ_ID 0x9F /* Read Flash Identification */
#define SPIFLASH_READ_STATUS 0x05 /* Read Status Register */
#define SPIFLASH_WRITE_ENABLE 0x06 /* Write Enable */
#define SPIFLASH_PAGE_PROGRAM 0x02 /* Page Program */
#define SPIFLASH_FAST_READ 0x0B /* Fast Read */
#define SPIFLASH_READ 0x03 /* Normal Read */